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"Don't you think that vegetables, especially potatoes, are much bigger than before?" said Li Hua, a middle school history teacher who likes to study the anecdotes behind various historical events, casually while picking vegetables in the supermarket.
On this day, she went shopping at the supermarket with her colleague Zhang Qiang. Zhang Qiang is a science teacher, and he smiled at Li Hua's sudden question: "You don't know this, the increase in the size of vegetables on the market is not necessarily because of the use of any bulking agent, in fact, there are many scientific reasons behind this." ”
As they chatted while choosing, Zhang Qiang began to explain: "Did you know that many times, the increase in the size of vegetables is due to advances in agricultural technology, such as optimized planting methods and improved seeds. But interestingly, even though these vegetables appear to be larger, their nutritional value does not increase as a result. ”
Li Hua asked curiously: "Then does such a change have any impact on our health?" Zhang Qiang smiled slightly and replied: "Actually, bigger vegetables are not necessarily harmful to the body, but if people mistakenly think that bigger is good, they may ignore other important nutritional factors of vegetables, such as the content of vitamins and minerals. ”
"For example, some vegetables that have been cultivated through fast-growing techniques usually have a higher moisture content, but may have a lower density of vitamins and minerals. ”
These words aroused Li Hua's thoughts, and she then asked: "Then how do we choose vegetables to be scientific?" Zhang Qiang pointed to a certain brand of organic potatoes and explained: "It is a good choice to choose products with organic logos." Organic farming usually means no chemical fertilizers and pesticides. ”
Their conversations were punctuated with Zhang Qiang's humor, and Li Hua felt that this way of shopping not only increased knowledge, but also made ordinary life full of fun. As shopping comes to an end, their minds are filled with new insights into a healthy lifestyle.
In fact, such discussions are very important in our daily lives. Scientific selection of ingredients and attention to nutritional balance are essential to maintain the health of individuals and families.
In this discussion about the size of vegetables, Zhang Qiang also added a point that people usually don't pay much attention to: "Have you ever thought that although potatoes are big now, in fact, when cooking, their cooking time may also be longer? ”
Li Hua was intrigued by this new angle, asking, "How will this change affect us?" Zhang Qiang explains: "Some vitamins and minerals are lost during the heating process of potatoes or other vegetables, especially during long cooking sessions. Large chunks of potatoes tend to take longer to cook thoroughly, which means more nutrient loss. ”
After hearing this, Li Hua thought for a while, and then said, "Then should we choose smaller vegetables in our daily life, or minimize the cooking time to retain more nutrients?"
Zhang Qiang nodded: "Exactly! In addition, using steaming or microwave heating can also effectively reduce the loss of vitamins." These tips, while simple, can be very helpful in maintaining the health of family members. ”
As it gets late, so does the end of their shopping trip. Li Hua felt that he had not only bought the ingredients he needed today, but also learned a lot of knowledge about food nutrition and health, and he was in a very happy mood.
Finally, when they were about to separate, Zhang Qiang made another point that made Li Hua think deeply: "In fact, choosing the right vegetables and the right cooking method is as important as choosing the right teaching method in education, both in order to get the best results." ”
This night, when preparing dinner, Li Hua deliberately reduced the cooking time and tried to cook by steaming, wanting to retain the nutrients in the food as much as possible. She feels that these small changes may bring great health to her family.
A few days later, she shared her learning experience at a health talk at school, and many of her colleagues were inspired by her insights to focus on and discuss how to practice healthier eating habits in their daily lives.
A member of the audience asked a question: "Mr. Zhang, you said that potatoes will lose more vitamin C after cooking for a long time, so can we preheat the potatoes before cooking, such as heating them slightly in the microwave, so as to reduce the nutrient loss during formal cooking?"
Zhang Qiang replied seriously: "This is a good method. In fact, preheating potatoes can shorten the final cooking time, thus reducing the loss of vitamin C. Heating potatoes in the microwave until they are half-cooked before cooking them can effectively retain more nutrients. So, this is definitely a trick worth trying. ”
What do you think about bulking agents? Welcome to discuss in the comment area!